A sparse square matrix, where entries are stored as triplets (i,j, val), where i and j are the row and column indices and val denotes the entry. More...

#include <coordinate_matrix.hpp>

Public Types
typedef viennacl::backend::mem_handle	handle_type

typedef scalar< typename viennacl::tools::CHECK_SCALAR_TEMPLATE_ARGUMENT < NumericT >::ResultType >	value_type

typedef vcl_size_t	size_type

Public Member Functions
	coordinate_matrix ()
	Default construction of a coordinate matrix. No memory is allocated. More...

	coordinate_matrix (viennacl::context ctx)

	coordinate_matrix (vcl_size_t rows, vcl_size_t cols, vcl_size_t nonzeros=0, viennacl::context ctx=viennacl::context())
	Construction of a coordinate matrix with the supplied number of rows and columns. If the number of nonzeros is positive, memory is allocated. More...

	coordinate_matrix (vcl_size_t rows, vcl_size_t cols, viennacl::context ctx)
	Construction of a coordinate matrix with the supplied number of rows and columns in the supplied context. Does not yet allocate memory. More...

void	reserve (vcl_size_t new_nonzeros)
	Allocate memory for the supplied number of nonzeros in the matrix. Old values are preserved. More...

void	resize (vcl_size_t new_size1, vcl_size_t new_size2, bool preserve=true)
	Resize the matrix. More...

void	clear ()
	Resets all entries in the matrix back to zero without changing the matrix size. Resets the sparsity pattern. More...

vcl_size_t	size1 () const
	Returns the number of rows. More...

vcl_size_t	size2 () const
	Returns the number of columns. More...

vcl_size_t	nnz () const
	Returns the number of nonzero entries. More...

vcl_size_t	internal_nnz () const
	Returns the number of internal nonzero entries. More...

const handle_type &	handle12 () const
	Returns the OpenCL handle to the (row, column) index array. More...

const handle_type &	handle () const
	Returns the OpenCL handle to the matrix entry array. More...

const handle_type &	handle3 () const
	Returns the OpenCL handle to the group start index array. More...

vcl_size_t	groups () const

Friends
template<typename CPUMatrixT , typename NumericT2 , unsigned int AlignmentV2>
void	copy (const CPUMatrixT &cpu_matrix, coordinate_matrix< NumericT2, AlignmentV2 > &gpu_matrix)

Detailed Description

template<class NumericT, unsigned int AlignmentV>
class viennacl::coordinate_matrix< NumericT, AlignmentV >

A sparse square matrix, where entries are stored as triplets (i,j, val), where i and j are the row and column indices and val denotes the entry.

The present implementation of coordinate_matrix suffers from poor runtime efficiency. Users are adviced to use compressed_matrix in the meanwhile.

Template Parameters

NumericT	The floating point type (either float or double, checked at compile time)
AlignmentV	The internal memory size for the arrays, given by (size()/AlignmentV + 1) * AlignmentV. AlignmentV must be a power of two.

Examples:: iterative.cpp.

Definition at line 186 of file coordinate_matrix.hpp.

Member Typedef Documentation

template<class NumericT, unsigned int AlignmentV>

typedef viennacl::backend::mem_handle viennacl::coordinate_matrix< NumericT, AlignmentV >::handle_type

Definition at line 189 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

typedef vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::size_type

Definition at line 191 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

typedef scalar<typename viennacl::tools::CHECK_SCALAR_TEMPLATE_ARGUMENT<NumericT>::ResultType> viennacl::coordinate_matrix< NumericT, AlignmentV >::value_type

Definition at line 190 of file coordinate_matrix.hpp.

Constructor & Destructor Documentation

template<class NumericT, unsigned int AlignmentV>

viennacl::coordinate_matrix< NumericT, AlignmentV >::coordinate_matrix ( )

inline

Default construction of a coordinate matrix. No memory is allocated.

Definition at line 194 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

viennacl::coordinate_matrix< NumericT, AlignmentV >::coordinate_matrix ( viennacl::context ctx )

inlineexplicit

Definition at line 196 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

viennacl::coordinate_matrix< NumericT, AlignmentV >::coordinate_matrix	(	vcl_size_t	rows,
		vcl_size_t	cols,
		vcl_size_t	nonzeros = `0`,
		viennacl::context	ctx = `viennacl::context()`
	)

inline

Construction of a coordinate matrix with the supplied number of rows and columns. If the number of nonzeros is positive, memory is allocated.

Parameters

rows	Number of rows
cols	Number of columns
nonzeros	Optional number of nonzeros for memory preallocation
ctx	Optional context in which the matrix is created (one out of multiple OpenCL contexts, CUDA, host)

Definition at line 219 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

viennacl::coordinate_matrix< NumericT, AlignmentV >::coordinate_matrix	(	vcl_size_t	rows,
		vcl_size_t	cols,
		viennacl::context	ctx
	)

inlineexplicit

Construction of a coordinate matrix with the supplied number of rows and columns in the supplied context. Does not yet allocate memory.

Parameters

rows	Number of rows
cols	Number of columns
ctx	Context in which to create the matrix

Definition at line 251 of file coordinate_matrix.hpp.

Member Function Documentation

template<class NumericT, unsigned int AlignmentV>

void viennacl::coordinate_matrix< NumericT, AlignmentV >::clear ( )

inline

Resets all entries in the matrix back to zero without changing the matrix size. Resets the sparsity pattern.

Definition at line 342 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::groups ( ) const

inline

Definition at line 372 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

const handle_type& viennacl::coordinate_matrix< NumericT, AlignmentV >::handle ( ) const

inline

Returns the OpenCL handle to the matrix entry array.

Definition at line 368 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

const handle_type& viennacl::coordinate_matrix< NumericT, AlignmentV >::handle12 ( ) const

inline

Returns the OpenCL handle to the (row, column) index array.

Definition at line 366 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

const handle_type& viennacl::coordinate_matrix< NumericT, AlignmentV >::handle3 ( ) const

inline

Returns the OpenCL handle to the group start index array.

Definition at line 370 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::internal_nnz ( ) const

inline

Returns the number of internal nonzero entries.

Definition at line 363 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::nnz ( ) const

inline

Returns the number of nonzero entries.

Definition at line 361 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

void viennacl::coordinate_matrix< NumericT, AlignmentV >::reserve ( vcl_size_t new_nonzeros )

inline

Allocate memory for the supplied number of nonzeros in the matrix. Old values are preserved.

Definition at line 270 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

void viennacl::coordinate_matrix< NumericT, AlignmentV >::resize	(	vcl_size_t	new_size1,
		vcl_size_t	new_size2,
		bool	preserve = `true`
	)

inline

Resize the matrix.

Parameters

new_size1	New number of rows
new_size2	New number of columns
preserve	If true, the old values are preserved. At present, old values are always discarded.

Definition at line 297 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::size1 ( ) const

inline

Returns the number of rows.

Definition at line 357 of file coordinate_matrix.hpp.

template<class NumericT, unsigned int AlignmentV>

vcl_size_t viennacl::coordinate_matrix< NumericT, AlignmentV >::size2 ( ) const

inline

Returns the number of columns.

Definition at line 359 of file coordinate_matrix.hpp.

Friends And Related Function Documentation

template<class NumericT, unsigned int AlignmentV>

template<typename CPUMatrixT , typename NumericT2 , unsigned int AlignmentV2>

void copy	(	const CPUMatrixT &	cpu_matrix,
		coordinate_matrix< NumericT2, AlignmentV2 > &	gpu_matrix
	)

friend

The documentation for this class was generated from the following file:

viennacl/coordinate_matrix.hpp

Public Types

Public Member Functions

Friends

Detailed Description

template<class NumericT, unsigned int AlignmentV> class viennacl::coordinate_matrix< NumericT, AlignmentV >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

template<class NumericT, unsigned int AlignmentV>
class viennacl::coordinate_matrix< NumericT, AlignmentV >